3645122 has 8 divisors (see below), whose sum is σ = 5888316. Its totient is φ = 1682352.

The previous prime is 3645121. The next prime is 3645133. The reversal of 3645122 is 2215463.

It can be written as a sum of positive squares in 2 ways, for example, as 3644281 + 841 = 1909^2 + 29^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (3645121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70073 + ... + 70124.

Almost surely, 2^3645122 is an apocalyptic number.

3645122 is a deficient number, since it is larger than the sum of its proper divisors (2243194).

3645122 is a wasteful number, since it uses less digits than its factorization.

3645122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140212.

The product of its digits is 1440, while the sum is 23.

The square root of 3645122 is about 1909.2202596872. The cubic root of 3645122 is about 153.8995521946.

The spelling of 3645122 in words is "three million, six hundred forty-five thousand, one hundred twenty-two".